Making ends meet in old age: DSB repair and aging

被引：67
作者：
Gorbunova, V [1 ]
Seluanov, A [1 ]
机构：
[1] Univ Rochester, Dept Biol, Rochester, NY 14627 USA
来源：
MECHANISMS OF AGEING AND DEVELOPMENT | 2005年 / 126卷 / 6-7期
关键词：
DNA repair; aging; double-strand DNA breaks; homologous recombination; nonhomologous DNA end joining;
D O I：
10.1016/j.mad.2005.02.008
中图分类号：
Q2 [细胞生物学];
学科分类号：
071009 ; 090102 ;
摘要：
Accumulation of somatic mutations has long been considered as a major cause of aging and age-related diseases such as cancer. Genomic rearrangements, which arise from aberrant repair of DNA breaks, are the most characteristic component of the mutation spectra in aging cells and tissues. The studies conducted in the past few years provide further support for the role of DNA double-strand break (DSB) repair in aging and cellular senescence. Evidence was obtained that in addition to accumulation of mutations the efficiency and fidelity of repair declines with age. We propose that DNA damage and age-related decline of DNA repair form a vicious cycle leading to amplification of damage and progression of aging, and discuss a hypothesis on how the interplay between the two pathways of DSB repair, homologous recombination and nonhomologous end joining, may contribute to the aging process. (c) 2005 Elsevier Ireland Ltd. All rights reserved.
引用
收藏
页码：621 / 628
页数：8
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